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RSU-503 Redundancy Switch Unit Installation and Operation Manual Part Number MN/RSU503.IOM Revision 8 Errata A Comtech EFData Documentation Update Subject: Changes to Chapter 3 (Communications Link Jumper Setting) Date: Document: July 28, 1997 RSU-503 Redundancy Switch Unit Installation and Operation Manual, Rev. 8, dated April 4, 1997 MN/RSU503.EA8 Attach this page to page 3-1 Part Number: Collating Instructions: Comments: The following changes provide the correct information for jumper placement when choosing between RS-232 or -485. This information will be incorporated into the next revision. Change Specifics: 3.4.1 Communications Link The terminal functions can be remotely controlled and monitored via an RS-485 or RS-232 communications link. • The RS-485 interface makes it possible to operate 255 terminals on a common communications link. • The RS-232 interface is used to communicate with a single terminal. The M&C module must be hardware configured on the M&C board to one of the two interfaces. Refer to the following table for jumper placement at JP1: RS-485 Configuration 1-2 3-4 5-6 7-8 Filename: T_ERRATA RS-232 Configuration 9-10 11-12 13-14 15-16 1 Comtech EFData is an ISO 9001 Registered Company RSU-503 Redundancy Switch Unit Installation and Operation Manual Part Number MN/RSU503.IOM Revision 8 April 4, 1997 Special Instructions: This is the ninth edition of the manual. Change bars were not utilized. For an overview of changes made to Rev. 7, refer to the preface (“Overview of Changes to Previous Edition”). This revision supersedes part number MN/SDMRSU503 Rev. 7 dated January 22, 1996. Copyright © Comtech EFData, 2000 All rights reserved. Printed in the USA. Comtech EFData, 2114 West 7th Street, Tempe, Arizona 85281 USA, (480) 333-2200, FAX: (480) 333-2161. Warranty Policy This EFData Corporation product is warranted against defects in material and workmanship for a period of one year from the date of shipment. During the warranty period, EFData will, at its option, repair or replace products that prove to be defective. For equipment under warranty, the customer is responsible for freight to EFData and all related custom, taxes, tariffs, insurance, etc. EFData is responsible for the freight charges only for return of the equipment from the factory to the customer. EFData will return the equipment by the same method (i.e., Air, Express, Surface) as the equipment was sent to EFData. Limitations of Warranty The foregoing warranty shall not apply to defects resulting from improper installation or maintenance, abuse, unauthorized modification, or operation outside of environmental specifications for the product, or, for damages that occur due to improper repackaging of equipment for return to EFData. No other warranty is expressed or implied. EFData Corporation specifically disclaims the implied warranties of merchantability and fitness for particular purpose. Exclusive Remedies The remedies provided herein are the buyer's sole and exclusive remedies. EFData Corporation shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether based on contact, tort, or any other legal theory. Disclaimer EFData has reviewed this manual thoroughly in order that it will be an easy-to-use guide to your equipment. All statements, technical information, and recommendations in this manual and in any guides or related documents are believed reliable, but the accuracy and completeness thereof are not guaranteed or warranted, and they are not intended to be, nor should they be understood to be, representations or warranties concerning the products described. Further, EFData reserves the right to make changes in the specifications of the products described in this manual at any time without notice and without obligation to notify any person of such changes. If you have any questions regarding your equipment or the information in this manual, please contact the EFData Customer Support Department. (For more information, refer to the preface.) Preface About this Manual This manual provides installation and operation information for the EFData RSU-503 redundancy switch unit, referred to in this manual as “the switch.” This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the RSU-503 redundancy switch unit. Conventions and References Used in this Manual Cautions and Warnings CAUTIO N CAUTION indicates a hazardous situation that, if not avoided, may result in minor or moderate injury. CAUTION may also be used to indicate other unsafe practices or risks of property damage. WARNING indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury. WARNIN G Rev. 8 i Preface RSU-503 Redundancy Switch Unit Trademarks Product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged. Related Documents The following documents are referenced in this manual: • • EFData Specification SP/3000 EFData KP-10 External Keypad Installation and Operation Manual Overview of Changes to Previous Edition A summary of the changes made to Rev. 7 includes: • • • • • • • Incorporated various cosmetic (non-technical) changes (e.g., formatting, spelling) Addition of RFT-705 and KST-2000 to Section 1.1 Corrected part numbers in Section 1.2 Addition of RSU-503 dimensional drawing in Chapter 2 Corrected installation parts kit in Chapter 2 Addition of an external connection locations photos in Chapter 2 and Appendix A Updated firmware information in Appendix B Reporting Comments or Suggestions Concerning this Manual Comments and suggestions regarding the content and design of this manual will be appreciated. To submit comments, please contact the EFData Customer Support Department according to the following information. ii Rev. 8 RSU-503 Redundancy Switch Unit Preface Customer Support Contact the EFData Customer Support Department for: • • • • • Product support Information on returning a product Information on upgrading a product Product training Reporting comments or suggestions concerning manuals An EFData Customer Support representative may be reached at: EFData Corporation Attention: Customer Support Department 2105 West 5th Place Tempe, Arizona 85281 USA (602) 968-0447 (Main EFData Number) (602) 517-2444 (Customer Support Desk) (602) 921-9012 FAX or, E-Mail can be sent to the Customer Support Department at: [email protected] To return an EFData product (in-warranty and out-of-warranty) for repair or replacement: 1. Request a Return Material Authorization (RMA) number from the EFData Customer Support Department. Be prepared to supply the Customer Support representative with the model number, serial number, and a description of the problem. 2. To ensure that the product is not damaged during shipping, pack the product in its original shipping carton/packaging. 3. Ship the product back to EFData. (Shipping charges should be prepaid.) For more information regarding the warranty policies, refer to the disclaimer page located behind the title page. Rev. 8 iii Preface RSU-503 Redundancy Switch Unit This page is intentionally left blank. iv Rev. 8 Table of Contents CHAPTER 1. INTRODUCTION.................................................................................. 1–1 1.1 Overview....................................................................................................................................................... 1–2 1.2 Assemblies .................................................................................................................................................... 1–4 1.3 Specifications................................................................................................................................................ 1–4 CHAPTER 2. INSTALLATION ................................................................................... 2–1 2.1 Unpacking..................................................................................................................................................... 2–1 2.2 Inspecting the Equipment ........................................................................................................................... 2–2 2.2.1 Included Parts......................................................................................................................................... 2–2 2.3 Switch Installation ....................................................................................................................................... 2–4 2.3.1 Tools Required ....................................................................................................................................... 2–6 2.3.2 Vertical Pole Installation ........................................................................................................................ 2–6 2.3.2.1 Round Pole...................................................................................................................................... 2–6 2.3.2.2 Square Pole ................................................................................................................................... 2–11 2.3.3 Spar Installation.................................................................................................................................... 2–12 2.4 External Connections ................................................................................................................................ 2–14 2.4.1 TX/IF Output (J1, J5) ........................................................................................................................... 2–16 2.4.2 RX/IF Input (J2, J6) ............................................................................................................................. 2–16 2.4.3 TX/RF Input (J3, J7) ............................................................................................................................ 2–16 2.4.4 M&C (J4, J8)........................................................................................................................................ 2–17 2.4.5 TX/RF Output (J9) ............................................................................................................................... 2–18 2.4.6 Waveguide Switch (J10)....................................................................................................................... 2–18 2.4.6.1 Waveguide Switch Pinout (J10).................................................................................................... 2–18 2.4.6.2 LNA Plate to Waveguide Switch .................................................................................................. 2–19 2.4.7 TX/RF Output (J11) ............................................................................................................................. 2–19 2.4.8 TX/IF Input (J12) ................................................................................................................................. 2–19 2.4.9 RX/IF Output (J13) .............................................................................................................................. 2–19 2.4.10 TX/IF Input (J14) ............................................................................................................................... 2–19 2.4.11 RX/IF Output (J15) ............................................................................................................................ 2–19 Rev. 8 v Table of Contents RSU-503 Redundancy Switch Unit 2.4.12 Monitor & Control (J16) .................................................................................................................... 2–20 2.4.13 GND (ERDE) ..................................................................................................................................... 2–21 2.5 External Cables.......................................................................................................................................... 2–22 2.6 Addressing.................................................................................................................................................. 2–24 CHAPTER 3. THEORY OF OPERATION .................................................................. 3–1 3.1 Power ............................................................................................................................................................ 3–1 3.2 Waveguide and Coax Switch Drivers......................................................................................................... 3–2 3.3 LNA............................................................................................................................................................... 3–2 3.4 M&C Operational Control ......................................................................................................................... 3–2 3.4.1 Communications Link ............................................................................................................................ 3–2 3.4.2 Switch Indicators.................................................................................................................................... 3–3 3.4.3 Auto/Manual Modes............................................................................................................................... 3–4 CHAPTER 4. MAINTENANCE ................................................................................... 4–1 4.1 Internal Switches ......................................................................................................................................... 4–1 4.2 Internal Indicators....................................................................................................................................... 4–2 4.3 Servicing with Power On ............................................................................................................................ 4–3 4.4 Troubleshooting ........................................................................................................................................... 4–4 4.5 Internal Connections ................................................................................................................................... 4–5 4.5.1 Serial Interfaces (J19, J20, J21) ............................................................................................................. 4–6 4.5.2 M&C Switch CMD and Indicators (J18)................................................................................................ 4–7 4.5.3 M&C Input/Output Signals (J17) ........................................................................................................... 4–8 APPENDIX A. RSU-503L OPTION ........................................................................... A–1 A.1 Description...................................................................................................................................................A–2 A.2 Assemblies....................................................................................................................................................A–2 A.3 External Connections .................................................................................................................................A–3 A.3.1 LNA Waveguide Switch Pinout (J10) ...................................................................................................A–5 A.4 External Cables ...........................................................................................................................................A–6 A.5 Addressing ...................................................................................................................................................A–7 APPENDIX B. REMOTE CONTROL OPERATION................................................... B–1 vi Rev. 8 RSU-503 Redundancy Switch Unit Table of Contents B.1 General.........................................................................................................................................................B–2 B.2 Message Structure.......................................................................................................................................B–2 B.2.1 Start Character .......................................................................................................................................B–3 B.2.2 Device Address......................................................................................................................................B–3 B.2.3 Command/Response ..............................................................................................................................B–4 B.2.4 End Character ........................................................................................................................................B–4 B.3 Switch Redundancy Commands/Responses..............................................................................................B–5 B.3.1 RFT Commands/Responses ...................................................................................................................B–5 B.3.2 Configuration Commands/Responses ....................................................................................................B–5 B.3.3 Status Commands/Responses.................................................................................................................B–7 GLOSSARY ................................................................................................................g–1 INDEX .......................................................................................................................... i–1 Rev. 8 vii Table of Contents RSU-503 Redundancy Switch Unit Figures Figure 1-1. Figure 1-2. Figure 2-1. Figure 2-2. Figure 2-3. Figure 2-4. Figure 2-5. Figure 4-1. Figure 4-2. Figure 4-3. Figure A-1. Figure A-2. Figure A-3. Figure A-4. RSU-503 ....................................................................................................................................... 1–1 RSU-503 Interconnect Block Diagram ......................................................................................... 1–3 RSU-503 Dimensions ................................................................................................................... 2–5 RSU-503 External Connections .................................................................................................. 2–15 Adapter Cables............................................................................................................................ 2–20 RSU-503 M&C, J4 and J8 (to RFT) ........................................................................................... 2–22 RSU-503, J10 to Waveguide Switch Plate.................................................................................. 2–23 LED and Switch Locations ........................................................................................................... 4–2 Access Panel ................................................................................................................................. 4–3 Internal Connections ..................................................................................................................... 4–5 RSU-503L Front Panel.................................................................................................................A–1 RSU-503L Low Loss Block Diagram ..........................................................................................A–2 RSU-503L External Connections.................................................................................................A–4 RSU-503L, J10 to Waveguide Switches ......................................................................................A–6 Tables Table 1-1. RSU-503 Specifications................................................................................................................. 1–4 Table 2-1. External Connections ................................................................................................................... 2–14 Table A-1. RSU-503L External Connections ..................................................................................................A–3 Table A-2. Waveguide Switch Cable Dimensions...........................................................................................A–7 viii Rev. 8 1 Chapter 1. INTRODUCTION This chapter provides an overview, included assemblies, and specifications for the RSU-503 (Figure 1-1). Note: Refer to Appendix A for information on the RSU-503L, a low-loss version of the RSU-503. Figure 1-1. RSU-503 Rev. 8 1–1 Introduction RSU-503 Redundancy Switch Unit 1.1 Overview The switch is a fully automated 1:1 protection switch designed to work with the following EFData Radio Frequency Terminals (and their amplifiers): • • • • • • • RFT-500 RFT-505 RFT-700 RFT-705 RFT-1200 (for RSU-503L information, refer to Appendix A) RFT-1225 (for RSU-503L information, refer to Appendix A) KST-2000 (for RSU-503L information, refer to Appendix A) Note: All references in this document to “RFT” apply to all the models listed above. The switch has a weather resistant enclosure which houses the indicators and controls to: • • Switch RFTs and LNAs Command the waveguide switch to toggle Specifically, the switch performs the following functions: • Controls waveguide/coaxial switch positions • Provides independent uplink and downlink paths • Routes the IF input to the online RFT • Routes the IF output from the online RFT • Initiates a switch-over in Auto mode by monitoring RFT faults • Supplies test ports for testing the standby channel • Receives RS-232/485 serial commands, routing them to the appropriate RFTs, and returns their responses • Receives its own RS-232/485 command set for Auto/Manual mode, A/B online, and address select • Provides FORM-C relay contacts for Summary Fault status Power is supplied by one or both RFTs. 1–2 Rev. 8 RSU-503 Redundancy Switch Unit Introduction Although there are no external indicators or switches (due to the nature of the weatherproof housing), there is an access panel that can be removed, allowing use of internal switches and indicators (refer to Chapter 4 for more information). Note: The internal indicators and switches are only used for factory testing and troubleshooting. The system, during setup and while running, is intended to be controlled remotely. Refer to Figure 1-2 for an interconnection block diagram of the switch. TX/IF CA/3005 RX/RF RFT-xxx #A RX/IF CA/3005 TX/IF A 70 MHz TX/IF INPUT 70 MHz RX/IF OUTPUT RS-232 REMOTE CONTROL J1 RX/IF A J14 S1 3 1 2 TNC 4 S2 31 4 M&C - RS-232 A TX/RF J4 P19 TNC J2 J15 TNC CA/3004 TX/RF CA/3003 26 TNC CA/1530 6 IND 2 IND 6 J16 N J11 AS/3000 S3 21 M&C AS/3002 P21 6 TNC TNC J12 J6 TX/IF B STANDBY TX/IF TEST INPUT 6 6 IND J10 RSU-503 J13 J8 LOW LOSS REDUNDANCY SWITCH UNIT STANDBY RF/IF TEST OUTPUT CA/3003 M&C - RS-232 B N J7 LNA #A 6 CA/3004 LNA TEST INPUT WG TO N ADAPTER N LNA #B FROM ANTENNA LNA WAVEGUIDE SWITCH REDUNDANT SWITCH PLATE 26 TX/RF RF/IF J9 N RF/IF B CA/3005 TO ANTENNA IND P20 TNC TNC J5 N J3 4 3 RFT-xxx #B RX/RF CA/3004 CA/1530 TX/IF SHOWN WITH "B" ONLINE Figure 1-2. RSU-503 Interconnect Block Diagram Rev. 8 1–3 Introduction RSU-503 Redundancy Switch Unit 1.2 Assemblies The switch consists of the following assemblies: Assembly Top Assembly RSU-503 Cable Harness Chassis Base Panel Divider M&C Assembly, RSU-503 M&C Firmware, RSU-503 EFData Part # PL/3000 PL/3001 FP/3802 FP/3139 PL/3002 FW/3080-1 1.3 Specifications Table 1-1 lists the operating specifications for the switch. Note: For more information pertaining to RSU-503 specifications, refer to EFData Specification SP/3000. Table 1-1. RSU-503 Specifications Input power Power consumption Physical: Depth Height Width Weight Environmental: Operating Temperature Storage Temperature Humidity Front Panel Controls External Indicators 1–4 10.8V, 1A (from either RFT) 5W 7.5” 8” 11” 7.4 lbs. -40 to +55°C -40 to +100°C 5 to 85%, noncondensing none none Rev. 8 2 Chapter 2. INSTALLATION This chapter provides installation instructions and external connector information for the switch. 2.1 Unpacking Generally, the switch and manual are shipped as part of a redundant terminal system, and are packaged in a wooden crate along with the redundant LNA plate and cables. 1. Remove the screws from the lid of the wooden crate, and remove the lid. 2. Remove the unit and manual from the cardboard and foam enclosure. Note: Save the packing material for reshipment. If the switch and manual are shipped in a cardboard box: 1. Cut the tape at the top of the carton where it is indicated OPEN THIS END. Do not use any cutting tool that will extend more than 1” into the container and cause damage to the switch. CAU TIO N 2. Lift the switch and manual out of the box, and remove the bubblepack and plastic bag from the switch. Note: Save the packing material for reshipment. Rev. 8 1 Installation RSU-503 Redundancy Switch Unit 2.2 Inspecting the Equipment 1. Carefully check the equipment for damage incurred during shipment. 2. Carefully check the equipment against the packing list shipped with the equipment to ensure that the shipment is complete. Refer to the following paragraphs. 2.2.1 Included Parts Note: Parts are not drawn to scale. Qty. 1 Description RSU-503. Qty. 1 Description Installation and operation manual. Note: The installation hardware listed below is included in the redundant system installation parts kit KT/3577. Qty. 1 Description Spar support bracket. Description 5/16-18 x 1” bolt. 2 EFData Part # FP/3175. Used for spar mount only. Unistrut — 14” long. 10 EFData Part # HW/5/16-18X1BLT. 5/16” split lockwasher. 6 EFData Part # FP/3595. 5/16-18 hex nut. 10 EFData Part # HW/5/16-SPLIT. 5/16” flat washer. EFData Part # HW/5/16-18HEXNT. 2 Qty. 4 EFData Part # HW/5/16-FLT. Rev. 8 RSU-503 Redundancy Switch Unit Installation 4 Pipe block. 6 5/16-18 spring nut. 2 EFData Part # HW/BLK-PIPE2-8. Used for round pole mount only. Threaded rod, 5/16-18 x 14”. 4 EFData Part # HW/5/16-18SPNUT. Flat fitting plate, 5/16”. 3 EFData Part # HW/RD5/16-18X14. Used for round and square pole mount only. 1/4-20 x 1” bolt. 3 EFData Part # HW/FIT-PLT-5/16. 1/4” flat washer. 3 EFData Part # 03P1079. 1/4” split lockwasher. EFData Part # O4P1022. EFData Part # HW/1/4-SPLIT. Rev. 8 3 Installation RSU-503 Redundancy Switch Unit 2.3 Switch Installation At the customer’s discretion, the switch can be installed anywhere on or near the antenna. The supplied hardware allows the installer a wide range of installation alternatives, including: • Vertical pole (e.g., mast) (either square or round). This is the most typical installation. • Within the hub of a large antenna. • Spar (i.e., rectangular bar) on the antenna structure. The switch is designed to be mounted with the interface connections facing the ground. Note: For custom installations, refer to Figure 2-1 for dimensions of the RSU-503. 4 Rev. 8 RSU-503 Redundancy Switch Unit Installation Figure 2-1. RSU-503 Dimensions Note: All dimensions in inches. Rev. 8 5 Installation 6 RSU-503 Redundancy Switch Unit Rev. 8 RSU-503 Redundancy Switch Unit Installation 2.3.1 Tools Required Qty. 1 Description 3/8” drive ratchet. 1 3” x 3/8” drive extension. 1 7/16” x 3/8” drive socket. (Metric equivalent: 11mm, 6 pt.) 1 1/2” x 3/8” drive socket. (Metric equivalent: 12mm, 6 pt.) 1 1/2” combination wrench. (Metric equivalent: 12mm combination wrench with a 6 pt. box end.) 2.3.2 Vertical Pole Installation 2.3.2.1 Round Pole The process described is for a typical installation. Custom kits may be ordered and are beyond the scope of this manual. Rev. 8 7 Installation RSU-503 Redundancy Switch Unit To install the switch to a round vertical pole: 1. Set the switch on its side, with the mounting holes facing up. 2. Install the 14” unistrut as follows: a. Position a 14” long unistrut (with the open side facing up) over the mounting holes on the unit. b. Using three 1/4-20 x 5/8” bolts, 1/4” split lockwashers, and 1/4” flat washers, attach the unistrut to the switch. c. Tighten the bolts firmly. 3. Install the pipe blocks as follows: a. Install two spring nuts in the 14” long unistrut which is mounted on the unit, and in a second 14” long unistrut. Be sure to center the spring nuts in the unistruts wide enough apart so that when the pipe blocks are installed, they will clear the pole when the unit is lifted into place for installation. b. Install each spring nut as follows: (1) Place the spring nut in the unistrut channel, spring side down, with its wide side parallel with the unistrut channel. 8 Rev. 8 RSU-503 Redundancy Switch Unit Installation (2) Press down on the spring nut to compress the spring, and rotate the nut 90° (perpendicular to the unistrut). (3) Release pressure on the spring nut. (4) Repeat Steps 3.b.(1) through 3.b.(3) for each spring nut. c. Using four 5/16-18 x 1” bolts, 5/16” split lockwashers, and 5/16” flat washers, loosely secure the pipe blocks to the spring nuts in each 14” unistrut. Ensure the pipe blocks are installed with the long angle facing inward, toward the pipe, as illustrated. DO NOT tighten the pipe block bolts until after mounting the switch on the vertical pole (see Step 5.e.). 4. Install the threaded rods as follows: a. Install two spring nuts in the 14” long unistruts mounted on the unit. Note: Ensure the spring nuts are positioned over the outer holes in the long unistruts. Rev. 8 9 Installation RSU-503 Redundancy Switch Unit b. To install each spring nut: (1) Place the spring nut in the unistrut channel, spring side down, with its wide side parallel with the unistrut channel. (2) Press down on the spring nut to compress the spring, and rotate the nut 90° (perpendicular to the unistrut). (3) Release pressure on the spring nut. (4) Repeat Steps 4.b.(1) through 4.b.(3) for each spring nut. c. Thread a 5/16-18 nut approximately 1-1/2” onto each threaded rod. (This will ensure that the threaded rods will extend beyond the spring nuts when installed.) d. Place a 5/16” split lockwasher, 5/16” flat washer, and flat fitting plate over each threaded rod. e. One threaded rod at a time, hold the washers and plate in place on the threaded rod and screw it into a spring nut, as illustrated. 10 Rev. 8 RSU-503 Redundancy Switch Unit Installation Notes: 1. Be sure to position the flanges of the fitting plates in the grooves of the unistruts. 2. Before tightening the nuts on the threaded rods, ensure that the end of each rod is screwed in until it is flush with the backside of the unistrut. This ensures the rods are threaded completely through the spring nuts. Tighten each nut firmly. f. Thread a 5/16-18 nut about 2” onto the end of each threaded rod. g. Slip a 5/16” split lockwasher, 5/16” flat washer and flat fitting plate (in that order) onto each threaded rod. 5. Mount the unit as follows: a. Lift the unit into position on the vertical pole. b Slip the 14” unistrut over the threaded rods (upper and lower). Note: Install the 14” unistrut with its open face toward the pole. c. Install a 5/16” flat washer, 5/16” split lockwasher, and 5/16-18 nut on each threaded rod. d. Position the unit as desired, and tighten the 5/16-18 nuts installed in Step 5.c. e. Slide the pipe blocks inward until they contact the vertical pole, then firmly tighten the 5/16-18 bolts. Rev. 8 11 Installation RSU-503 Redundancy Switch Unit 2.3.2.2 Square Pole For square vertical pole installation, follow the steps in Section 2.3.2.1, with the following exceptions: • • 12 Do not perform Step 3. Do not perform Step 5.e. Rev. 8 RSU-503 Redundancy Switch Unit Installation 2.3.3 Spar Installation Note: The process described is for a typical installation. Custom kits may be ordered and are beyond the scope of this manual. To install the switch to a spar: 1. Set the unit on its side, with the mounting holes facing up. 2. Install a 14” unistrut. a. Position a 14” unistrut (with the open side facing up) over the mounting holes on the switch. b. Using three 1/4-20 bolts, 1/4” split lockwashers, and 1/4” flat washers, attach the unistrut to the switch. c. Tighten the bolts firmly. 3. Mount the switch as follows: a. Install two spring nuts in the unistrut (centered on the unistrut, the width of the spar bracket holes). b. To install each spring nut: (1) Place the spring nut in the unistrut channel, spring side down, with its wide side parallel with the unistrut channel. (2) Press down on the spring nut to compress the spring, and rotate the nut 90° (i.e., perpendicular to the unistrut). Rev. 8 13 Installation RSU-503 Redundancy Switch Unit (3) Release pressure on the spring nut. (4) Repeat Steps 3.b.(1) through 3.b.(3) for each spring nut. c. Lift the switch into position. d. Using two 5/16-18 bolts, 5/16” split lockwashers, and 5/16” flat washers, bolt the spar bracket in place. d. Tighten the bolts firmly. 14 Rev. 8 RSU-503 Redundancy Switch Unit Installation 2.4 External Connections All connections between the switch and other equipment are made through front panel connections, as shown in Table 2-1 (refer to Figure 2-2 for connector locations). Failure to properly connect the units will result in loss of communications between the switch and the RFTs. CAU TIO N Table 2-1. External Connections Name TX/IF OUTPUT RX/IF INPUT TX/RF INPUT MONITOR & CONTROL TX/IF OUTPUT RX/IF INPUT TX/RF INPUT MONITOR & CONTROL TX/RF OUTPUT WAVEGUIDE SWITCH TX/RF OUTPUT TX/IF INPUT RX/IF OUTPUT TX/IF INPUT RX/IF OUTPUT MONITOR & CONTROL GND ERDE Desig. Type Function Switch to RFT #A (Primary) J1 TNC, 50Ω IF Uplink to Unit A J2 TNC, 50Ω IF Downlink from Unit A J3 N TX Uplink from Unit A J4 26-pin Circ. Monitor and control See Section 2.4.4 for pinouts Switch to RFT #B (Backup) J5 TNC, 50Ω IF Uplink to Unit B J6 TNC, 50Ω IF Downlink from Unit B J7 N TX Uplink from Unit B J8 26-pin Circ. Monitor and control See Section 2.4.4 for pinouts Switch to Antenna J9 N TX Uplink from online unit J10 19-pin Circ. Waveguide switch control See Section 2.4.6.1 for pinouts Standby Unit Test Ports J11 N TX output test signal J12 TNC, 50Ω IF input test signal J13 TNC, 50Ω IF output test signal Switch to Modem Terminal Interface J14 TNC, 50Ω IF Uplink J15 TNC, 50Ω IF Downlink J16 26-pin Circ. Modem Terminal Interface (MTI) See Section 2.4.12 for pinouts Ground None #10-32 Stud Chassis Ground (See note) (See note) Note: Refer to Section 2.6 for addressing information. Rev. 8 15 Installation RSU-503 Redundancy Switch Unit Figure 2-2. RSU-503 External Connections 16 Rev. 8 RSU-503 Redundancy Switch Unit Installation 2.4.1 TX/IF Output (J1, J5) The TX/IF Output connectors are TNC connectors, each with an impedance of 50Ω. These connectors carry the IF uplink signal to the online RFT (Unit A or B). 2.4.2 RX/IF Input (J2, J6) The RX/IF Input connectors are TNC connectors, each with an impedance of 50Ω. These connectors carry the IF downlink signal from the online RFT (Unit A or B). 2.4.3 TX/RF Input (J3, J7) The TX/RF Input connectors are type N connectors, each with an impedance of 50Ω. These connectors carry the transmit uplink signal from the online RFT (Unit A or B). Rev. 8 17 Installation RSU-503 Redundancy Switch Unit 2.4.4 M&C (J4, J8) The M&C connectors are used to interface with Units A and B, respectively. Included on these connectors are: • • • Nine RS-232/485 communication pins (A to J) Switch power (L) Fault reporting The M&C connectors are 26-pin circular female connectors, with the following pinouts: Pin # A B C D E F G H J K L M N P R S T U V W X Y Z a b c Name RS-232 GND CTS TD/TX RTS RD/RX DSR LNA POWER EXT POWER EXT FLT IN Reserved N/C GND Chassis Ground Reserved UL FLT NC UL FLT COM UL FLT NO DL FLT NC DL FLT COM DL FLT NO LNA RTN Reserved Reserved RS-485 -RX/TX -RX/TX +RX/TX +RX/TX Function Clear to Send Transmit Data Ready to Send Receive Data Data Set Ready Ground GND 10V to LNA Input Voltage, 11V, 1A max. Fault Input from TWT Ground Ground Fault relay input, closes with Uplink fault Fault relay input, COMMON Fault relay input, opens with Uplink fault Fault relay input, closes with Downlink fault Fault relay input, COMMON Fault relay input, opens with Downlink fault Ground return from LNA Notes: 1. Clear to Send (CTS) is tied to Ready to Send (RTS) in RS-232 mode. 2. RD/RX and TD/TX are switched in the switch in order to communicate with the RFTs. 18 Rev. 8 RSU-503 Redundancy Switch Unit Installation 2.4.5 TX/RF Output (J9) The TX/RF Output connector is a 50Ω type N connector that carries the transmit uplink signal from the online RFT (Unit A or B) to the antenna. 2.4.6 Waveguide Switch (J10) The Waveguide Switch connector connects the switch to the LNA plate using a 1:1 cable. 2.4.6.1 Waveguide Switch Pinout (J10) The Waveguide Switch connector uses a 19-pin circular female connector with the following pinouts: Name LNA Position 1 Command LNA Command Common LNA Position 2 Command LNA Indicator, Position 1 LNA Indicator, Common LNA Indicator, Position 2 RF Position 1 Command RF Command Common RF Position 2 Command RF Indicator, Position 1 RF Indicator, Common RF Indicator, Position 2 LNA PWR #A LNA RTN #A LNA PWR #B LNA RTN #B Rev. 8 Pin # C G D H R T E L F J V K A B N P Function +28V pulse for 500 milliseconds Ground +28V pulse for 500 milliseconds Connects to Common when in position 1 Ground Connects to Common when in position 2 +28V pulse for 500 milliseconds Ground +28V pulse for 500 milliseconds Connects to Common when in position 1 Ground Connects to Common when in position 2 19 Installation RSU-503 Redundancy Switch Unit 2.4.6.2 LNA Plate to Waveguide Switch The following table outlines the pinouts of the LNA plate to Waveguide Switch cable. This cable is internal on the redundant LNA plate. Note: This pinout table may be helpful if an EFData Waveguide Switch is used. Name Command, Position 1 Command Common Command, Position 2 Indicator, Position 1 Indicator Common Indicator, Position 2 Pin # A B C D E F Function +28V pulse for 500 milliseconds Ground +28V pulse for 500 milliseconds Connects to Common when in position 1 Ground Connects to Common when in position 2 2.4.7 TX/RF Output (J11) The TX/RF Output connector is a 50Ω type N connector used to monitor the transmit output signal from the offline RFT. This connector is used to test the offline unit. 2.4.8 TX/IF Input (J12) The TX/IF Input connector is a 50Ω TNC connector used to input the IF test signal to the offline RFT. This connector is used to test the offline unit. 2.4.9 RX/IF Output (J13) The RX/IF Output connector is a 50Ω TNC connector used to monitor the IF output signal from the offline RFT. This connector is used to test the offline unit. 2.4.10 TX/IF Input (J14) The TX/IF Input connector is a 50Ω TNC connector used to receive the IF uplink signal from the modem. The switch routes the signal to the online RFT for transmission. 2.4.11 RX/IF Output (J15) The RX/IF Output connector is a 50Ω TNC connector used to provide the IF downlink signal to the modem (after the signal is picked up by the antenna and routed through the online LNA and RFT). 20 Rev. 8 RSU-503 Redundancy Switch Unit Installation 2.4.12 Monitor & Control (J16) The Modem Terminal Interface (MTI) connector is the remote control interface connector. Included on this connector are RS-232/485 communication lines and a summary fault indication. For standard RS-232/485 applications, an adapter cable is available to connect the 26-pin circular connector to a standard 9-pin D. Refer to Figure 2-3 for an illustration of the adapter cable and its pinouts. EFDATA: CN/STPG26M01 PT06E16-26P(SR) P1 GND A CTS RD/RX RTS TD/TX DSR D E F G H 5 9 4 8 3 7 2 6 1 26 PIN MALE EFDATA: CN/STPG26M01 PT06E16-26P(SR) P1 A B C D J -RX/TX -RX/TX +RX/TX +RX/TX GND 26 PIN 5 9 4 8 3 7 2 6 1 MALE Figure 2-3. Adapter Cables Rev. 8 21 Installation RSU-503 Redundancy Switch Unit The MTI connector is a 26-pin circular female connector with the following pinouts: Pin # A B C D E F G H J K L M N P R S T U V W X Y Z a b c Name RS-232 GND CTS RD/RX RTS TD/TX DSR RS-485 -RX/TX -RX/TX +RX/TX +RX/TX GND Reserved EXT_PWR EXT FLT1 #A EXT FLT1 #B N/C Ground Reserved Reserved Reserved Reserved FLT NC FLT COM FLT NO Reserved Reserved Reserved Function Clear to Send Receive Data Ready to Send Transmit Data Data Set Ready Ground Output, 11V for KP-10 TWT FLT input for primary channel TWT FLT input for secondary channel Chassis Ground Summary fault relay, connects to COM with fault Summary fault relay, COMMON Summary fault relay, opens with fault Note: Clear to Send (CTS) is tied to Ready to Send (RTS) in RS-232 mode. 2.4.13 GND (ERDE) GND is a #10-32 stud for the purpose of connecting all units to a common chassis ground. 22 Rev. 8 RSU-503 Redundancy Switch Unit Installation 2.5 External Cables Refer to Figures 2-4 and 2-5 for diagrams of the two different external multi-conductor cables used with the switch in a redundant system. Figure 2-4. RSU-503 M&C, J4 and J8 (to RFT) Rev. 8 23 Installation RSU-503 Redundancy Switch Unit Figure 2-5. RSU-503, J10 to Waveguide Switch Plate Note: Be sure to connect the primary RFT (A) to J4, and the backup RFT (B) to J8. 24 Rev. 8 RSU-503 Redundancy Switch Unit Installation 2.6 Addressing The following are the factory default addresses: • • • Switch is set to address 1 RFT A is set to address 2 RFT B is set to address 3 The proper M&C cable hook-up is critical: • • RFT A must be connected to the switch Port A RFT B must be connected to the switch Port B Note: If these connections are reversed, no communications will take place. Rev. 8 25 3 Chapter 3. THEORY OF OPERATION This chapter provides the basic theory for the following: • • • • Switch power Waveguide and coax switch drivers LNA M&C operational control 3.1 Power In a redundant system, the switch is powered from either of the two RFT terminals via the M&C interconnect cable. External DC power (approximately 10.8V) enters the M&C on pins 1 and 2 of connector J17 (25-pin D), and is “ORed” through diodes CR1 and CR2. The switch is monitored by the analog-to-digital (A/D) converter U16, and is made available as a maintenance status through the serial terminal. A 3-terminal regulator, U1, converts and regulates the +5V to all the logic, including the microcontroller U18. PS1 converts the 10V input voltage to 30V, where it is stored by capacitors C6 through C10 to supply the 500 millisecond pulses to the transfer switches. Rev. 8 3–1 Theory of Operation RSU-503 Redundancy Switch Unit 3.2 Waveguide and Coax Switch Drivers The microcontroller creates the 500 millisecond pulses to control the positions of all four transfer switches. Photovoltaic opto-isolated switches U8, U9, U10, and U11 transform the +5V logic into 30V pulses to drive the latching coils of the switches. Each microwave transfer switch contributes 0.3 dB of insertion loss, with a minimum of 70 dB of isolation. 3.3 LNA The LNAs are powered directly from their respective RFTs through the RF coax cable. The RFT performs a current sense on its LNA, and informs the switch by declaring a downlink fault, if one is detected. 3.4 M&C Operational Control 3.4.1 Communications Link The terminal functions can be remotely controlled and monitored via an RS-485 or RS-232 communications link. • The RS-485 interface makes it possible to operate 255 terminals on a common communications link. • The RS-232 interface is used to communicate with a single terminal. The M&C module must be hardware configured on the M&C board to one of the two interfaces. Refer to the following table for jumper placement at JP3: RS-485 Configuration 1-2 3-4 5-6 7-8 3–2 RS-232 Configuration 9-10 11-12 13-14 15-16 Rev. 8 RSU-503 Redundancy Switch Unit Theory of Operation Although the switch M&C is considered to be the slave unit on the MTI RS-232 bus, it becomes the master when communicating to each of the two RFTs. When not servicing MTI requests, the M&C monitors indicators, faults, and voltages. When applicable, it generates switch-over pulses. When polled from the MTI, the switch M&C will perform the following functions: 1. Return a response acknowledging receipt of the command. 2. Decode the address in the message, compare it to the stored addresses, and route it to its intended destination. 3. Return a block of status information when requested. 3.4.2 Switch Indicators Address 9000 reads in the eight indicator bits representing the four uplink and four downlink indicator positions. The following tables show how the four bits are decoded to indicate whether the unit A or B is currently online. Rev. 8 B0 IF_A B1 RF_A B2 IF_B B3 RF_B 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Uplink WR8000, B0 1 = A ON LINE 0 = B ON LINE 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 WR8000, B4 1 = OKAY 0 = AMBIGUITY FAULT 0 0 0 1 - Valid state, A online 0 0 0 0 0 0 0 0 1 - Valid state, B online 0 0 0 3–3 Theory of Operation RSU-503 Redundancy Switch Unit B4 IF_A B5 RF_A B6 IF_B 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 Downlink B7 WR8000, B2 RF_B 1= A ON LINE 0 = B ON LINE 0 1 1 1 0 1 1 1 0 0 1 0 0 0 1 0 0 1 1 1 0 1 1 1 0 0 1 0 0 0 1 0 WR8000, B5 1 = OKAY 0 = AMBIGUITY FAULT 0 0 0 1 - Valid state, A online 0 0 0 0 0 0 0 0 1 - Valid state, B online 0 0 0 3.4.3 Auto/Manual Modes In Auto mode, switch-over can only occur as a result of a fault, as listed in the following table: RD9001 B0 UL FLT A 0 0 1 1 B1 UL FLT B 0 1 0 1 B2 DL FLT A 0 0 1 1 B3 DL FLT B 0 1 0 1 Fault Description No faults. Fault on B uplink, switch to uplink A, WR8001 B0. Fault on A uplink, switch to uplink B, WR8001 B1. Fault on both, do nothing. Monitor, and switch to the first unit to remote the fault. Fault Description No faults. Fault on B downlink, switch to downlink A, WR8001 B2. Fault on A downlink, switch to downlink B, WR8001 B3. Fault on both, do nothing. Monitor, and switch to the first unit to remote the fault. In Manual mode, the switch initiates the online pulses from only two sources: • • Request from the MTI Onboard push-button switches In normal service with the cover secured, switch-over can occur only from an MTI request. 3–4 Rev. 8 4 Chapter 4. MAINTENANCE This chapter provides information on the following: • • • Internal switches, indicators, and connections How to service the switch with the power on Troubleshooting Note: Under normal conditions, this switch does not require periodic or preventive maintenance. Most problems, if any, will arise during the initial installation. These problems will most often be due to improper cabling, waveguide wiring, or indicator positions. 4.1 Internal Switches The switch does not have any external switches or controls. The internal switches (shown in Figure 4-1) are not normally used by the operator. However, if the switch must be opened, descriptions of the four push-button switches are provided in the following table. Switch UL AUTO/MAN UL A/B ONLINE DL AUTO/MAN DL A/B ONLINE Rev. 8 Description Depress to alternate between Uplink Auto and Manual. Depress to alternate between A and B uplink online. Depress to alternate between downlink Auto and Manual. Depress to alternate between A and B downlink online. 4–1 Maintenance RSU-503 Redundancy Switch Unit 4.2 Internal Indicators The switch does not have any external indicators. The internal indicators (shown in Figure 4-1) are not normally used by the operator. However, if the switch must be opened, descriptions of the indicators are provided in the following table. Indicator LED PWR A PWR B 32V SUM FLT Green Green Green Red FLT A FLT B FLT AMB B OL MAN Red Red Red Yellow Yellow FLT A FLT B FLT AMB B OL MAN Red Red Red Yellow Yellow Cause System Status Illuminates if RFT A power is available. Illuminates if RFT B power is available. Illuminates when power available to switches. Illuminates an ambiguity failure, RFT fault, or power supply fault. Uplink Illuminates with failure of unit A uplink. Illuminates with failure of unit B uplink. Illuminates if uplink switch indicators do not agree. Illuminates when unit B uplink is online. Illuminates when uplink is in manual mode. Downlink Illuminates with failure of unit A downlink. Illuminates with failure of unit B downlink. Illuminates if downlink switch indicators do not agree. Illuminates when unit B downlink is online. Illuminates when downlink is in manual mode. Figure 4-1. LED and Switch Locations 4–2 Rev. 8 RSU-503 Redundancy Switch Unit Maintenance 4.3 Servicing with Power On If maintenance must be performed on the unit while the link remains on the air, proceed as follows: 1. Loosen the access panel screws on the side of the switch case (refer to Figure 4-2) to expose the internal M&C Logic Control PCB. Figure 4-2. Access Panel 2. Observe the LEDs on the M&C board, which will indicate the following: a. b. c. d. e. f. g. h. i. j. k. l. m. n. Receipt of power from RFT A Receipt of power from RFT B Transfer switch power (32V) available Summary fault indicator, if any fault in the system Uplink RFT, Unit A fault Uplink RFT, Unit B fault Uplink Indicator Ambiguity fault Uplink unit A or B currently online Uplink mode in Auto or Manual Downlink RFT, Unit A fault Downlink RFT, Unit B fault Downlink Indicator Ambiguity fault Downlink unit A or B currently online Downlink mode in Auto or Manual 3. Refer to Section 4.4 for troubleshooting assistance. Rev. 8 4–3 Maintenance RSU-503 Redundancy Switch Unit 4.4 Troubleshooting The following paragraphs may be used to diagnose problems within the system. Locate the malfunction in the left column that most closely matches the situation. Then, read across to the possible problem. All conditions except the first can be observed only when the cover of the switch is removed. Refer to Figure 4-1 for LED locations. Condition Cannot initiate switch-over from A to B, or vice versa PWR A LED not lit PWR B LED not lit 32V LED not lit UL or DL Unit A fault LED lit UL or DL Unit B fault LED lit UL or DL Ambiguity Fault LED lit Summary fault LED lit 4–4 Possible Problem System could be in AUTO mode, where switch-overs are automatic. Cable not connected from RFT A. RFT A not powered up. Cable not connected from RFT B. RFT B not powered up. DC/DC module PS1 bad on M&C board. Short on output of module PS1. RFT A has a fault in either the UL or DL. Cable from RFT A disconnected, or RFT A turned off. RFT B has a fault in either the UL or DL. Cable from RFT B disconnected, or RFT B turned off. IF and RF transfer switches (input/output) are not in sync. Use remote terminal, or M&C push-buttons to alternate between A and B online. This will synchronize the pair. Request Fault Status from remote terminal to ascertain the specific fault from fault list. Rev. 8 RSU-503 Redundancy Switch Unit Maintenance 4.5 Internal Connections The internal connections are not normally seen by the user, since the switch is designed to prevent the weather from damaging the internal circuitry. However, if the switch must be opened, pinouts of the three internal connectors have been provided. Refer to Figure 4-3 for location of the internal connections. Figure 4-3. Internal Connections Rev. 8 4–5 Maintenance RSU-503 Redundancy Switch Unit 4.5.1 Serial Interfaces (J19, J20, J21) The internal Serial Interface connectors are 9-pin D with the following pinouts: Pin # 1 2 3 4 5 6 7 8 9 Name RS-232 RS-485 GND TD/TX RD/RX +RX/TX GND DSR RTS -RX/TX CTS -RX/TX Function Transmit Data Receive Data Data Set Ready (Tied high) Ready to Send Clear to Send (see Note 1) (see Note 2) (see Note 2) Notes: 1. J19 and J20 do not use DSR on pin 6. 2. Clear to Send (CTS) is tied to Ready to Send (RTS) in RS-232 mode. 4–6 Rev. 8 RSU-503 Redundancy Switch Unit Maintenance 4.5.2 M&C Switch CMD and Indicators (J18) This connector is a 37-pin female D connector with the following pinouts: Pin # 1 20 2 21 3 22 4 23 5 24 6 25 7 26 8 27 9 28 10 29 11 30 12 31 13 32 14 33 15 34 16 35 17 36 18 37 19 Rev. 8 Name Terminal Power Spare UL IF IND COM DL IF IND COM UL RF IND COM DL RF IND COM Spare UL IF A IND UL IF B IND Spare UL RF A IND UL RF B IND Spare DL IF A IND DL IF B IND Spare DL RF A IND DL RF B IND Spare Spare Spare UL IF A CMD UL RF A CMD Spare UL IF B CMD UL RF B CMD Spare DL IF A CMD DL RF A CMD Spare DL IF B CMD DL RF B CMD Spare UL IF CMD COM UL RF CMD COM DL IF CMD COM DL RF CMD COM Function Output, 10V power for the KP-10 Tied to signal ground Tied to signal ground Tied to signal ground Tied to signal ground 0V = Indicates uplink IF connected to unit A 0V = Indicates uplink IF connected to unit B 0V = Indicates uplink RF connected to unit A 0V = Indicates uplink RF connected to unit B 0V = Indicates downlink IF connected to unit A 0V = Indicates downlink IF connected to unit B 0V = Indicates downlink RF connected to unit A 0V = Indicates downlink RF connected to unit B +28V pulse, commands UL IF switch to unit A +28V pulse, commands UL RF switch to unit A +28V pulse, commands UL IF switch to unit B +28V pulse, commands UL RF switch to unit B +28V pulse, commands DL IF switch to A +28V pulse, commands DL RF switch to unit A +28V pulse, commands DL IF switch to unit B +28V pulse, commands DL RF switch to unit B Tied to signal ground Tied to signal ground Tied to signal ground Tied to signal ground 4–7 Maintenance RSU-503 Redundancy Switch Unit 4.5.3 M&C Input/Output Signals (J17) The M&C I/O connector is a 25-pin male D connector with the following pinouts: Pin # 13 25 12 24 11 23 10 22 9 21 8 20 7 19 6 18 5 17 4 16 3 15 2 14 1 4–8 Name DC GND A DC GND B UL FLT COM A UL FLT COM B DL FLT COM A DL FLT COM B Spare UL FLT NO A UL FLT NC A UL FLT NO B UL FLT NC B Spare DL FLT NO A DL FLT NC A DL FLT NO B DL FLT NC B Spare Spare SUM FLT NO SUM FLT COM SUM FLT NC Spare XVA Spare XVB Function Tied to signal ground Tied to signal ground Tied to signal ground Tied to signal ground Tied to signal ground Tied to signal ground Input, connected to ground when normal Input, connected to ground when faulted Input, connected to ground when normal Input, connected to ground when faulted Input, connected to ground when normal Input, connected to ground when faulted Input, connected to ground when normal Input, connected to ground when faulted Output, connected to COM when normal Output common Output, connected to COM with any fault Input, DC power from unit A (approx. 11V) Input, DC power from unit B (approx. 11V) Rev. 8 A Appendix A. RSU-503L OPTION This appendix describes the RSU-503L (Figure A-1), a low-loss version of the RSU-503. Note: The RSU-503 and RSU-503L are similar units. As a result, only the primary differences of the RSU-503L are provided in this appendix. Figure A-1. RSU-503L Front Panel Rev. 8 A–1 RSU-503L Option RSU-503 Redundancy Switch Unit A.1 Description Refer to Figure A-2 for an interconnection block diagram of the RSU-503L in a typical earth station application. Using WR229 (C-band) or WR75 (Ku-band) waveguide, the RSU-503L routes the RF outputs from both RFTs directly to a waveguide switch on the antenna plate. In addition to the RSU-503 functions, the RSU-503L provides command pulses for the external uplink waveguide switch (28V). A.2 Assemblies The RSU-503L consists of the following assemblies: Assembly Top Assembly Cable Harness Chassis Base Panel Divider M&C Assembly, RSU-503L M&C Firmware, RSU-503L C A /3 0 0 5 T X / IF R X / IF TN C TN C C A /3 0 0 5 26 T X /IF A 70 M Hz T X /IF IN P U T J1 4 TN C S 1 3 1 TN C J 1 R X / IF A TN C RS232 R E M O TE C O N TR O L 2 4 J1 5 T X /R F 1 C A /3 0 0 3 M & C- R S 2 3 2 A J4 A S /3 0 0 0 - 1 S3 3 6 IND 4 M & C 12 WG J10 LN A TE S T IN P U T TN C TN C J12 J6 J1 3 J 8 R S U -5 0 3 L R F /IF LOW LOSS REDUNDANCY SWITCH UNIT S TA N D B Y B T X / IF R F /IF T X / IF TN C TN C SHO W N W IT H 6 6 LN A W A V E G U ID E S W IT C H REDUNDANT T X / RF S W IT C H P LA TE W A V E G U ID E R X /R F " B " FROM ANTENNA WG T O N A D A P TE R N LN A #B C A /3 0 0 3 M & C -R S 2 3 2 B R F T-X X X #B A S /2 5 7 8 TO ANTENNA 1 19 IND TN C J5 C /A 3 0 0 5 UPLINK W A V E G U ID E S W IT C H N LN A #A P20 S TA N D B Y R F / IF TE S T O U TP U T 26 2 CA/3951 A S /3 0 0 2 P 2 1 J16 TE S T IN P U T 4 3 IND 2 T X / IF B W A V E G U ID E 6 TN C TN C C A /1 5 3 0 R X /R F R F T-X X X #A A S /2 5 7 8 P19 S 2 70 M Hz R X / IF O U TPU T J2 EFData Part # PL/3000-1 PL/3001-1 FP/3802 FP/3139 PL/3002 FW/3080-1 C A /1 5 3 0 ONL IN E Figure A-2. RSU-503L Low Loss Block Diagram A–2 Rev. 8 RSU-503 Redundancy Switch Unit RSU-503L Option A.3 External Connections Note: The following connections, available on the RSU-503, are not available with the RSU-503L: • • • TX/RF Input (J3, J7) TX/RF Output (J9) TX/RF Output (J11) (test output only) Failure to properly connect the units will result in loss of communications between the switch and the RFTs. CAUTIO N All connections between the switch and other equipment are made through front panel connections, as shown in Table A-1 (refer to Figure A-3 for connector locations). Table A-1. RSU-503L External Connections Name TX/IF OUTPUT RX/IF INPUT MONITOR & CONTROL TX/IF OUTPUT RX/IF INPUT MONITOR & CONTROL WAVEGUIDE SWITCH TX/IF INPUT RX/IF OUTPUT TX/IF INPUT RX/IF OUTPUT MONITOR & CONTROL GND ERDE Desig. Type Function Switch to RFT #A (Primary) J1 TNC, 50Ω IF Uplink to Unit A J2 TNC, 50Ω IF Downlink from Unit A J4 26-pin Circ. Monitor and control See Section 2.4.4 for pinouts Switch to RFT #B (Backup) J5 TNC, 50Ω IF Uplink to Unit B J6 TNC, 50Ω IF Downlink from Unit B J8 26-pin Circ. Monitor and control See Section 2.4.4 for pinouts Switch to Antenna J10 19-pin Circ. Waveguide switch control See Section 2.4.6.1 for pinouts Standby Unit Test Ports J12 TNC, 50Ω IF input test signal J13 TNC, 50Ω IF output test signal Switch to Modem Terminal Interface J14 TNC, 50Ω IF Uplink J15 TNC, 50Ω IF Downlink J16 26-pin Circ. Modem Terminal Interface (MTI) See Section 2.4.12 for pinouts Ground None #10-32 Stud Chassis Ground (See note) (See note) Note: Refer to Section A.5 for addressing information. Rev. 8 A–3 RSU-503L Option RSU-503 Redundancy Switch Unit Figure A-3. RSU-503L External Connections A–4 Rev. 8 RSU-503 Redundancy Switch Unit RSU-503L Option A.3.1 LNA Waveguide Switch Pinout (J10) Name Command, LNA Position 1 LNA Command Common Command, LNA Position 2 LNA Indicator, Position 1 LNA Indicator, Common LNA Indicator, Position 2 Command, RF Position 1 RF Command Common Command, RF Position 2 RF Indicator, Position 1 RF Indicator, Common RF Indicator, Position 2 LNA PWR #A LNA RTN #A LNA PWR #B LNA RTN #B Chassis Ground Rev. 8 Pin # C G D H R T E L F J V K A B N P S Function +28V pulse for 500 milliseconds Ground +28V pulse for 500 milliseconds Connects to Common when in position 1 Ground Connects to Common when in position 2 +28V pulse for 500 milliseconds Ground +28V pulse for 500 milliseconds Connects to Common when in position 1 Ground Connects to Common when in position 2 10V power for LNA 1 Ground Return for LNA 1 10V power for LNA 2 Ground Return for LNA 2 Ground for Shields A–5 RSU-503L Option RSU-503 Redundancy Switch Unit A.4 External Cables Refer to Figure A-4 for a diagram of the waveguide switch cable and Table A-2 for cable dimensions. DIMENSION "A" SEE TABLE 28P1040 PTO6E-14-19S (SR) CABLE: 30P1034 NQ-1922SJ 28P1038 PTO6E-14-19P (SR) A M B N U BLK-WHT LNA1 PWR WHT SPARE1 BRN-WHT LNA RTN BRN LNA2 PWR BLU SPARE2 RED LNA2 RTN RED-WHT DLPOS1 CMD P C G D H R T GRN-WHT DLCMD COM ORN-WHT DLPOS2 CMD VIO-WHT DLPOS1 IND ORN DLIND COM YEL DLPOS2 IND A M B N U P C G D H R T GRN GRN S E L F J V K MATES TO ANTENNA BULKHEAD CONN. 28P1041 PT00E-14-19P (SR) S ULPOS1 CMD ULCMD COM ULPOS2 CMD ULPOS1 IND ULIND COM ULPOS2 IND A B C U/L W G SW D E (CONNECTOR SUPPLIED W ITH W G SW ITCH) CN/STPG06F02 F CABLE:30P1054 BELDON 9260 DIMENSION "B" SEE TABLE Figure A-4. RSU-503L, J10 to Waveguide Switches A–6 Rev. 8 RSU-503 Redundancy Switch Unit RSU-503L Option Table A-2. Waveguide Switch Cable Dimensions Dimension “A” 12 ft. 17 ft. 22 ft. Dimension “B” 10 ft. 15 ft. 20 ft. A.5 Addressing The following are the factory default addresses: • • • RSU-503 is set to address 1 RFT A is set to address 2 RFT B is set to address 3 The proper M&C cable hook-up is critical: • • RFT A must be connected to the RSU Port A RFT B must be connected to the RSU Port B Note: If these connections are reversed, no communications will take place. Rev. 8 A–7 RSU-503L Option RSU-503 Redundancy Switch Unit This page is intentionally left blank. A–8 Rev. 8 B Appendix B. REMOTE CONTROL OPERATION This appendix describes the remote control operation of the RSU-503 and RSU-503L. • • Firmware number: Software version: FW/3080-1P 1.14 Notes: 1. Unless indicated otherwise, any references in this appendix to “the switch” apply to both the RSU-503 and RSU-503L. 2. Before operating the system, ensure the installation is complete and the cable connectors are tight, especially the connections from the waveguide switch indicators. If not, no harm will come to the unit, but the online indicators might read erroneously if the waveguide switch is not set to the same online position as the coax switches in the switch. Ambiguity between any of the RF switches can be corrected by commanding a switchover from A to B, or B to A. This will then latch all switches on the same channel. This natural ambiguity only occurs during installation, and would only reoccur if a switch becomes faulty. Note: The firmware referenced in this manual may be an earlier version of the actual firmware supplied with the unit. Rev. 8 B–1 Remote Control Operation RSU-503 Redundancy Switch Unit B.1 General Remote controls and status information are transferred via an RS-485 (optional RS-232) serial communications link. Commands and data are transferred on the remote control communications link as US ASCII-encoded character strings. The remote communications link is operated in a half-duplex mode. Communications on the remote link are initiated by a remote controller or terminal. The switch never transmits data on the link unless it is commanded to do so. Serial communications with either RFT through the switch remains the same as communicating directly with the unit. Each individual RFT is assigned its own unique address, and will respond when that address is polled. To the RFT, the interconnection is transparent—it will not know whether the command came through the switch or directly from the terminal. The switch receives all commands from the interface, decodes the contained address, compares it to its stored addresses, and routes the message to the intended destination. When an RFT communication parameter (address, baud rate, and parity) is changed, the switch will also store that information in its EEPROM. Note: All three units must have unique addresses. B.2 Message Structure The ASCII character format used requires 11 bits/character: • • • 1 start bit 7 information bits plus 1 parity bit 2 stop bits • • • 1 start bit 8 information bits with no parity bit 2 stop bits or: Messages on the remote link fall into the categories of commands and responses. Commands are messages which are transmitted to the switch, while responses are messages returned by the switch in response to a command. B–2 Rev. 8 RSU-503 Redundancy Switch Unit Remote Control Operation The general message structure is as follows: • • • • Start Character Device Address Command/Response End of Message Character B.2.1 Start Character A single character precedes all messages transmitted on the remote link. This character flags the start of a message. This character is: • • “<” for commands “>” for responses B.2.2 Device Address The device address is the address of the switch which is designated to receive a transmitted command, or which is responding to a command. Valid device addresses are 1 to 3 characters long, and in the range of 1 to 255. Address 0 is reserved as a global address which simultaneously addresses all devices on a given communications link. Devices do not acknowledge global commands. Each switch and RFT connected to a common remote communications link, must be assigned its own unique address. Addresses are software selectable at the unit, and must be in the range of 1 to 255. Note: Global address “*” is reserved for KP-10 (the external keypad) commands. Refer to the KP-10 External Keypad Installation and Operation Manual. Rev. 8 B–3 Remote Control Operation RSU-503 Redundancy Switch Unit B.2.3 Command/Response The command/response portion of the message contains a variable-length character sequence which conveys command and response data. If the switch receives a message addressed to it which does not match the established protocol or cannot be implemented, a negative acknowledgment message is sent in response. This message is: • >add/?ER1_parity error'cr''lf'] (Error message for received parity errors.) • >add/?ER2_invalid parameter'cr''lf'] (Error message for a recognized command which cannot be implemented or has parameters which are out of range.) • >add/?ER3_unrecognizable command'cr''lf'] (Error message for unrecognizable command or bad command syntax.) • >add/?ER4_converter in lock mode'cr''lf'] (Controller in Lock mode. Must go to Enable mode first.) • >add/?ER5_not supported by hardware'cr''lf'] (Command is valid command, but it is not supported by the current hardware configuration.) • >add/?ER6_address in use'cr''lf'] (Address specified in the ASA, ASB, or ASR command is already assigned.) • >add/?ER7_RSU-503 in auto mode'cr''lf'] (Switch is in Auto mode. Must go to Manual mode first.) Note: “add” is used to indicate a valid 1 to 3 character device address in the range between 1 and 255. B.2.4 End Character Each message is ended with a single character which signals the end of the message: • • B–4 “cr” “]” Carriage return character for commands End bracket for responses Rev. 8 RSU-503 Redundancy Switch Unit Remote Control Operation B.3 Switch Redundancy Commands/Responses B.3.1 RFT Commands/Responses For information on remote control operation of the two individual RFT units, refer to the remote control operation specification in the RFT Radio Frequency Terminal Installation and Operation Manual. B.3.2 Configuration Commands/Responses The following commands control the redundancy configuration and its operating modes. Redundant System Address Selection The following messages are addressed to the switch (or corresponding redundant RFT) and, if applicable, will be reformatted before the transmission to the selected RFT. These commands assign the addresses to the three units which make up the redundancy system. RFT A Address Command : Response: Status: Response: RFT B Address Command : Response: Status: Response: RSU-503 Address Command : Response: Status: Response: <add/ASA_XXX'cr' >add/ASA_XXX'cr''lf'] <add/ASA_'cr' >add/ASA_XXX'cr''lf'] Where: XXX = 1 to 255. Default = 2. add = Current address of the switch. XXX = New address for unit A. This command selects the address of RFT, unit A (RFT_A). <add/ASB_XXX'cr' >add/ASB_XXX'cr''lf'] <add/ASB_'cr' >add/ASB_XXX'cr''lf'] Where: XXX = 1 to 255. Default = 3. add = Current address of the switch. XXX = New address for unit B. This command selects the address of RFT, unit B (RFT_B). <add/ASR_XXX'cr' >add/ASR_XXX'cr''lf'] <add/ASR_'cr' >add/ASR_XXX'cr''lf'] Where: XXX = 1 to 255. Default = 1. add = Current address of the switch. XXX = New address for the switch. This command selects the address of the switch. If the desired address is currently in use, the response will be: >add/?ER_ADDRESS IN USE'cr''lf'] Rev. 8 B–5 Remote Control Operation Redundant System Comm Poll Command : Response: Response: RSU-503 Redundancy Switch Unit <add/POLL_XXXX'cr' >add/POLL_A'cr' Address = XXX'cr' Baud Rate = YYYYY'cr' Parity = ZZ'cr''lf'] <add/POLL_B'cr' Address = XXX'cr' Baud Rate = YYYY'cr' Parity = ZZ'cr''lf'] Where: add = Switch address. XXXX = A, B, or both. XXX = 1 to 255. YYYYY = 19200, 9600, 4800, 2400, 1200, 600, or 300. ZZ = EV, OD, or NO (none, for 8 bit). This command is used to retrieve address, baud rate, and parity information for the three communication links: • • • Terminal to switch Switch to RFT Unit A Switch to RFT Unit B The user can specify the polling of either Unit A or Unit B, or both, but must know the address of the switch. Upon receipt of this command, the switch will commence a polling sequence of the specified unit(s) at all possible combinations of address, baud rate, and parity. The polling is completed when polled unit responds, or all combinations have been exhausted. The switch then transmits the polled information back to the user terminal. If the switch does not receive a response from the polled unit, it will respond with the following message in place of the address, baud rate, and parity information: <add/POLL_X'cr' Unable To Communicate'cr''lf'] X = A or B Note: Approximately 24 minutes are required to poll all combinations of address, baud rate, and parity per unit (A or B). The only way to abort this operation once it has been started is to cycle power. B–6 Rev. 8 RSU-503 Redundancy Switch Unit Remote Control Operation B.3.3 Status Commands/Responses Lock Mode Uplink Switch Config Command : Response: Status: Response: Command : Response: Status: Response: Uplink Redundancy Switch Mode Command : Response: Status: Response: Downlink Switch Config Downlink Redundancy Switch Mode Command : Response: Status: Response: Command : Response: Status: Response: Hardware Command : Response: Status: Response: Switch Initialization Config Command : Response: Status: Response: <add/LM_XX'cr' >add/LM_XX'cr''lf'] Where: XX = LK (lock) or EN (enable). Default = EN. Lock mode prevents the current settings from being changed. <add/LM_'cr' >add/LM_XX'cr''lf'] <add/ULS_X'cr' >add/ULS_X'cr''lf'] Where: X = A or B. This command is only applicable for the RSU-503L. <add/ULS_'cr' >add/ULS_X'cr''lf'] <add/ULM_X'cr' >add/ULM_YYYY'cr''lf'] <add/ULM_'cr' >add/ULM_YYYY'cr''lf'] <add/DLS_X'cr' >add/DLS_X'cr''lf'] <add/DLS_'cr' >add/DLS_X'cr''lf'] <add/DLM_X'cr' >add/DLM_YYYY'cr''lf'] <add/DLM_'cr' >add/DLM_YYYY'cr''lf'] <add/HWC_X'cr' >add/HWC_X'cr''lf'] <add/HWC_'cr' >add/HWC_X'cr''lf'] <add/SWI_X'cr' >add/SWI_X'cr''lf'] <add/SWI_'cr' >add/SWI_X'cr''lf'] This command selects the uplink switch configuration, placing the selected unit online, and the other on standby. Where: X = M (Manual) or A (Auto). YYYY = MAN or AUTO. This command places the switch uplink in either Manual or Auto mode. In Auto mode, the switch will activate a switchover upon a fault of the online unit. Where: X = A or B. This command selects the downlink switch configuration, placing the selected unit online, and the other on standby. Where: X = M (Manual) or A (Auto). YYYY = MAN or AUTO. This command places the switch downlink in either Manual or Auto mode. Where: X = A (both Uplink and Downlink), B (Uplink only), C (Downlink only), D (both Uplink and Downlink without LNA plate - mask off DLA_FLT). This command is used to configure the RSU for either "Uplink and Downlink", "Uplink Only", or "Downlink Only" operation. Where: X = A (UL/DL, last state on power-down) (default), B (UL/DL A/A online), C (UL/DL B/B online), D (UL/DL A/B online), E (UL/DL B/A online). Note: Valid for all HWC configurations (see the HWC_ command). This command is used to configure the switch online initialization on power-up, and clears any ambiguity faults. Redundancy Operating Status Command : Response: <add/ROS_'cr' >add/ROS_'cr' ULS_X'cr' ULM_X'cr' DLS_X'cr' DLM_X'cr' ASA_nnn'cr' ASB_nnn'cr''lf'] Where: X = A or B, uplink switches. X = A (auto) or M (manual). X = A or B, downlink switches. X = A (auto) or M (manual). nnn = 1 to 255, Unit A address. nnn = 1 to 255, Unit B address. This command returns a block of data from the switch, reflecting the status of the current redundancy configuration. Rev. 8 B–7 Remote Control Operation Redundancy Fault Status Command : Response: RSU-503 Redundancy Switch Unit <add/RFS_'cr' >add/RFS_'cr' XVA_XXX'cr' XVB_XXX'cr' P05_XXX'cr' P32_XXX'cr' ULA_XXX'cr' ULB_XXX'cr' ULS_XXX'cr' DLA_XXX'cr' DLB_XXX'cr' DLS_XXX'cr''lf'] Where: XXX = OK or FLT. Input power from Unit A. XXX = OK or FLT. Input power from Unit B. XXX = OK or FLT. Internal +5V power. XXX = OK or FLT. Internal +32V power. XXX = OK or FLT. Uplink fault on Unit A. XXX = OK or FLT. Uplink fault on Unit B. XXX = OK or FLT. Uplink switch ambiguity. XXX = OK or FLT. Downlink fault on Unit A. XXX = OK or FLT. Downlink fault on Unit B. XXX = OK or FLT. Downlink switch ambiguity. This command returns a block of data reflecting the current and logged faults in the switch. Logged faults will be reset when receiving this command, while current faults can be read on the second request. Redundancy Summary Fault Redundancy Maintenance Status Command : Response: <add/RSF_'cr' >add/RSF_'XXX'cr''lf'] Command : Response: <add/RMS_'cr' >add/RMS_'cr' XVA_nn.n'cr' XVB_nn.n'cr' P05_nn.n'cr' P32_nn.n'cr''lf'] Where: XXX = OK or FLT. Returns status of current faults only. Where: nn.n = Voltage of input power A. nn.n = Voltage of input power B. nn.n = Internal +5V power supply. nn.n = Internal +32V power supply. This command returns a block of data from the switch, reflecting the status of certain internal parameters for the purpose of troubleshooting. RS232 Baud Rate Select RS232 Parity Select Equipment Type Status Command : Response: Status: Response: Command : Response: Status: Response: Command : Response: <add/BR_XXXX'cr' >add/BR_XXXX'cr''lf'] Where: XXXX = 300 to 19200, in standard settings of 300, 600, 1200, 2400, 4800, 9600, and 19200. Default = 9600. <add/BR_'cr' >add/BR_XXXX'cr''lf'] <add/PS_XX'cr' >add/PS_XX'cr''lf'] Where: XX = OD (odd), EV (even), or NO (none, for 8 bit). Default = EV. <add/PS_'cr' >add/PS_XX'cr''lf'] <add/ET_'cr' >add/ET_'cr' R - RSU-503 SW_X.XX'cr' A - RFT SW_X.XX'cr' B - RFT SW_X.XX'cr''lf'] Where: X.XX = software version. This command returns the equipment type polled and software version of each unit in the redundant system. If unit A and/or B is not communicating with the switch, the following response(s) will be displayed: A - NO COMMUNICATION'cr' B - NO COMMUNICATION'cr''lf'] B–8 Rev. 8 RSU-503 Redundancy Switch Unit Remote Control Operation This page is intentionally left blank. Rev. 8 B–9 G Glossary The following is a list of acronyms and abbreviations that may be found in this manual. Acronym/ Abbreviation Ω A A/D C CMD COM CR CTS dB DC DL DSR EEPROM EXT FLT GHz GND IF IND lbs LED LNA M&C MAN Max MHz MTI NC NO PCB PWR Rev. 8 Definition Ohms Ampere Analog-to-Digital Celsius Commands Common Carriage Return Clear to Send Decibels Direct Current Downlink Data Signal Rate Electrically-Erasable Programmable Read-Only Memory External Reference Clock Fault Gigahertz (109 Hertz) Ground Intermediate Frequency Indicates Pounds Light Emitting Diode Low Noise Amplifier Monitor and Control Manual Maximum Megahertz (106 Hertz) Modem Terminal Interface No Connection or Normally Closed Normally Open Printed Circuit Board Power g–1 Glossary RSU-503 Redundancy Switch Unit RD RF RFT RMA RSU RTN RTS RX SP SUM SW TD TWT TX UL V W WG g–2 Receive Data Radio Frequency Radio Frequency Terminal Return Material Authorization Redundancy Switch Unit Return Ready to Send Receive Specification Summary Switch Transmit Data Traveling Wave Tube Transmit Uplink Volts Watts Waveguide Rev. 8 RSU-503 Redundancy Switch Unit Index I —A— Addressing, 2–24, A–7 Auto/Manual Modes, 3–4 —C— Communications Link, 3–2 —M— M&C (J4, J8), 2–17 M&C Input/Output Signals (J17), 4–8 M&C Operational Control, 3–2 M&C Switch CMD and Indicators (J18), 4–7 Message Structure, B–2 Monitor & Control (J16), 2–20 —P— —D— Power, 1–2, 1–4, 3–1, 4–3, 4–7 Device Address, B–3 —R— —E— End Character, B–4 External Cables, 2–22, A–6 —G— RFT Commands/Responses, B–5 RX/IF Input (J2, J6), 2–16 RX/IF Output (J13), 2–19 RX/IF Output (J15), 2–19 —S— GND (ERDE), 2–21 —I— Included Parts, 2–2 Internal Connections, 4–5 Internal Indicators, 4–2 Internal Switches, 4–1 Serial Interfaces (J19, J20, J21), 4–6 Servicing with Power On, 4–3 Start Character, B–3 Status Commands/Responses, B–7 Switch Indicators, 3–3 Switch Redundancy Commands/Responses, B–5 —T— —L— LED and Switch Locations, 4–2 LNA Plate to Waveguide Switch, 2–19 LNA Waveguide Switch Pinout (J10), A–5 Rev. 8 Index Tools Required, 2–6 Troubleshooting, 4–1, 4–4 TX/IF Input (J12), 2–19 TX/IF Input (J14), 2–19 i–1 Index TX/IF Output (J1, J5), 2–16 TX/RF Input (J3, J7), 2–16, A–3 TX/RF Output (J11), 2–19, A–3 TX/RF Output (J9), 2–18, A–3 i–2 RSU-503 Redundancy Switch Unit —W— Waveguide and Coax Switch Drivers, 3–2 Waveguide Switch (J10), 2–18 Waveguide Switch Cable Dimensions, A–7 Waveguide Switch Pinout (J10), 2–18, A–5 Rev. 8